Math diary, Grade 6, Volume 1, 200 words, Article 1, 20 1X year, X month, X day, X week, X fine.
On Saturday, my mother and I went to our hometown in the country. Along the way, I saw the farmer's uncle harvesting sweet potatoes. Sweet potatoes were like fat dolls, smiling at the farmer's uncle. My mother told me: Is it the sweet potato harvest season now? Then she said to herself: Is sweet potato rich again today? I said:? What is the use of collecting so many sweet potatoes? Mom said. Sweet potato can play a great role! Can be made into sweet potato peel, sweet potato powder and sweet potato strips.
Knowing that I had learned the percentage, my mother asked me: 50 Jin of sweet potato can squeeze out 5 Jin of sweet potato powder. What is the flour yield of these sweet potatoes? If grandma squeezes 500 Jin of sweet potatoes this year, how much sweet potato powder can grandma collect? I calculated:
5/50? 100%=0. 1? 100%= 10%
500? 10%=50 (kg)
I said to my mother after the calculation: the output of sweet potato powder is 10%, and grandma can receive 50 Jin of sweet potato powder this year. ? I asked my mother curiously: So much sweet potato powder, what is grandma used for? When salty rice is eaten, our Pingtan specialty snacks are indispensable. Our family of three needs 0.4 kg of sweet potato powder to cook a salty rice, and grandma gave us 10 kg, which can be used for us to cook salty rice several times. I calculated:
10? 0.4=25 (times)
I said to my mother: Can you do it 25 times? . Mom said:? Eat salty rice twice a month on average, is it enough for a year? I can't finish it yet. You can add another meal during the Spring Festival. ? Mom said:? You are really good at it. In fact, it can also be made into vermicelli soup, vermicelli and vermicelli knot. ?
Math diary, Grade Six, Book One, 200 words, Chapter Two
Zero looks monotonous, but it is not. In fact, it is very rich and hides a lot. Zero is special in mathematics. No matter what you do, you should consider zero.
In geometry? 0? Often used as a sign.
? 0? The uniqueness of ""comes from some concepts or problems, such as the reciprocal of every rational number. 0? But no, rational numbers are divided into positive and negative numbers. ? 0? Isn't it special to divide a number into one category? In divisor, only zero cannot be divided. Zero is a dividend, no matter what number it is divided by (? 0? Except) all get zero points.
We often ignore zero, but it plays an important role. Like what's the problem? Some people can't figure it out? 0? . When counting, some people will forget zero. For example, how many integers are there that are not greater than 5 and not less than -5? Someone will have eight. Actually, there are still 0. For example, which numbers are not bigger in absolute value than themselves? That's positive numbers and zeros (also called non-negative numbers).
Zero is more colorful in life. At the parent-teacher conference after the semester, which one do we all want to remember when the teacher shows the parents the mistakes in registration? 0? This means that we didn't make a mistake, our parents are happy and we are happy. But we don't want to see this number or an integer close to this number on paper, otherwise the day of going home will be sad. In the competition, no one wants it? 0? .
Zero is money. I think zero is a trap in the problem, and everyone should consider zero when doing problems in the future. Zero can also change people's mood on different occasions. It's wonderful and rich.
Math diary, Grade Six, Volume One, 200 words, three 20 1X year, month, day, week and sunny.
Last week, we studied fractions. Fractions have numerator, denominator and fractional line, for example, 1/3, where 3 is denominator, 1 is numerator and the middle horizontal line is fractional line.
Scores are used in many places in life. For example, a book has thirty pages, and each page is 1/30 of a book. Fractions can also be used to add and subtract! For example, half plus half equals two, which is 1. Why is this happening? If you divide a cake into two parts, each part is 1/2 of the cake, and then put the two parts together, there are two parts 1/2, which is just a cake. When adding and subtracting fractions, if the denominator is the same, only the numerator is added, regardless of the denominator. And 2/2 of the numerator and denominator are the same, which is 1.
I also learned to compare the size of fractions. The teacher taught us the formula: numerator is the same as denominator, the fraction with large denominator is small, and the fraction with small denominator is large; Denominators are the same as numerators, with large numerator scores larger and small numerator scores smaller.
The teacher also reminded us that when writing scores, we usually write scores first, which means average score, then denominator and finally numerator.
Math diary, Grade Six, Volume One, 200 words, 4 20 1X year, X month, X day, X week, X fine.
On Sunday, Yang Wen and I played 2 1 point. The rules of the game are simple: each person draws four cards and then uses them? +、-、? The final number of these calculation methods must be 24.
The game started, and we each drew four cards. Alas! How come my cards are so bad! Listen, four people are all trump cards. At this moment, I only heard Yang Wen say: I can do it, you see, 5+5= 10, 10? 2=20,20+4=24。 ? I lost the first round. But I am not discouraged, because there are still opportunities in the future, and I must seize them and strive for them. I drew four more cards? 6、5、8、3? . I was so excited that I blurted out: 6-5= 1, 8? 3=24,24? 1=24。 Now 1 is even with 1. ?
Yang Wen said? What happened? I will definitely beat you in the next round. ? It's the third round, and I have drawn four more cards? 10、9、6、 10? . I was dumbfounded at first sight. Suddenly, I heard Yang Wen shout. 6? 4=24,24+ 1- 1=24。 2-0/kloc, I won. ? I watched him smug and helpless.
Although I lost the game, I think 24 o'clock is really interesting and math is really wonderful. I must study math well and use it flexibly in the future? +、-、? , mixed operation, in the next 24 points, we must use it with ease and be a master.
Math diary, Grade 6, Book 1, 200 words, Article 5, 20 1X year, X month, X day, X week, X fine.
Last week, we studied fractions. Fractions have numerator, denominator and fractional line, for example, 1/3, where 3 is denominator, 1 is numerator and the middle horizontal line is fractional line.
Scores are used in many places in life. For example, a book has thirty pages, and each page is 1/30 of a book. Fractions can also be used to add and subtract! For example, half plus half equals two, which is 1. Why is this happening? If you divide a cake into two parts, each part is 1/2 of the cake, and then put the two parts together, there are two parts 1/2, which is just a cake. When adding and subtracting fractions, if the denominator is the same, only the numerator is added, regardless of the denominator. And 2/2 of the numerator and denominator are the same, which is 1.
I also learned to compare the size of fractions. The teacher taught us the formula: numerator is the same as denominator, the fraction with large denominator is small, and the fraction with small denominator is large; Denominators are the same as numerators, with large numerator scores larger and small numerator scores smaller.
The teacher also reminded us that when writing scores, we usually write scores first, which means average score, then denominator and finally numerator.
After reading the 200 words in the first volume of the sixth grade of math diary, I will still read:
1. Grade 6 math diary 200 words.
2. math diary has 200 words in Grade 6.
3. math diary Daquan, sixth grade primary school students.
4. math diary, Grade Six, Book One has 300 words.